Pawl-and-ratchet device.



W. L. BAUM ANN. v PAWL AND BATOHET DEVICE. 12111011101 FILED MAB.14,1914.

Patented 811111122, 1911.

Atturfieys I To all whom it may concern pander to be driven into thefiue, without nlsin due-to the Ztit , away. Fig. 2

nvention herein disclosed, wlth rawn-nn'n-ror 'n nvien.

mamas.

application tiled an i ran. semi at. errata.

Be 1t known that l, Woornn L. BA UMANN, a citizen of the United States,-residin at in the county of Fresno and tate ifornia, have invented a newanduseful Pawl-and-Ratchet Device, or which the llowing is aspecification. T. The resent invention appertains to a line ex an ingdevice, and relate lar y to an actuating mechanism for fiueexpanders. a

it is the object of the presentinvention to provide an appliance of thenature indicated, tor actuating a common roller flue expander, in eitherdirection, and for enabling the eximpairing or injuring the,

' shocks.

he present inveiitionalso comprehends the provision'oi an appliance ofthe eharacter s ecified, which will be compai'atively simp 'e, compactand inexpensive in construction, as well as bein simple, convenient,substantial, serviceabe and eficient in actuating mocha-1 i s use.

With the foregoing and other-objects in view which will appear as thedescription proceeds, the invention resides in th bination and thedetails of construction scribed and claimed, it bein understood thatchanges in the precise em odiment I can be made in the scope of what isclaimed, without departing from the s irit of the invention. heinvention has een illustrated in its preferredembodiment drawing,wherein:.

Figure 1 is a longitudinal-section of the improved appliance, portionshein broken is a cross section the device, taken on the line 2- 2 ofFig. 1.

carrying out the there is provided a spind or pin 1, having the taperedmandrel portion 2 at one end,

. and upon which an ordinary roller flue expander may be mounted.arious' flue expanders ma be employed upon the mandrel 2, and for t isreason a detailed illustration I and description hereof is not deemednecesof the reSent apits free end,

The sh ft or The bod ortion of the 1 is providlled s more partied,

1. is preferably provided with a retaining collar 4 at its other orouter end.

' I spindle or shaft with longitudinal feathers or splines 5, andcollars 6 are mounted upon the splndle or pin 1 and seat against theends of the feathers 5, the collars 6 being preterably locked inplace-by means of cotter pins 7.. or the like. IA ratchet wheel 8.having square 'slidably mountedupon the body portion of the spindle orpin 1, and engages the feathers 5 in order that the spindle and ratchetwheel may. be restrained from rotatin with respect to one another,although t e ratchet W oral and spindle may reciprocate or slide teethis I e com arrangement of parts and in hereinafter de-.

of the 1present invention,

relative to one. another. The ratchet wheel I its sides with bosses 9.,and coiled wire compression springs surroundmg the spindle 1, are seatedhetween the collars 6 and the bosses'aot the ratchet wheel to yieldinglyhold the' ratchet wheel intermediatethe collars. 6. I

The means for rotating the ratchet wheel 8 embodies an annulus orannular body liencircling the ratchet wheel 8, the o enin 12 of the body11 receiving the rate et w eel loosely and annular plates or flat rings13 heing secured'to the sides or faces of the body 11 by means of screwsor other securing members 14:, and loosely embracing the bosses 9 of theratchet wheel. The inner edge portions of the retaining plates or rings13 project beyond the edges of the opening 12 of the body, and overlapthe faces or sides of the ratchet wheel, to retain the ratchetwheelwithin the body 11, and to permit the ratchet wheel'anol b dy torotate with respect to one another. The eriphery of the ratchet wheel 8being 0011211611 or housed within the body 11 and retainin plates 13,will cause the body andratchet w longitudinally as a uni p The body orannulus 11 is provided with a radial extension or boss 15, and a radialbore .16 extends through the projection 15 vto the opening 12 of thewithinthe bore 16 is a pawl or dog circular cross 'section,'the samebeing posed slidably and rotatably within the 16, and havlng an outwardlstem 18 slidable through a ringer collar 19 threaded or otherwiseengaged into the mouth of the bore 16. The stem 18 is proh yPI'OJBClZHIg the expander to be tapvidedwith ahandle or finger "piece atits tpecitlmtion o1 hettera ratenti p m ma @lqgpfg 2% 119114 via eel toshift v ody. Mounted I dis- , arranged to force the thereby, to .yieldin either jars upon the ratchet wheel and parts cartated, to rotatetheouter extremity, and a coiled wire compression spring 21 surrounds thestem 18 within the bore 16 and has its terminals seated against thecollar 19 and the pawl or dog 17, and yieldingly presses the pawl or doginwardly against the periphery of the ratchet wheel. The inner end ofthe pawl 17 is inclined or beveled, as at 22, and one side is flattened,as at 23, to present a beveled tooth for engaging the teeth of theratchet wheel. The shoulder or flat side 23 of the pawl or dog isarranged to engage the teeth of the ratchet wheel with the body 11,while the beveled face 22 of the pawl or dog, is pawl or dog outwardlythe spring 21, when against the tensionof with respect the body 11 isswung properly, to the ratchet wheel.

As a means for rotating or oscillating the body 11, the same is providedwith a radial socketed projection 24 adjacent the rojection or boss 15,and'threadedly receivmg the inner end of a handle or lever 25, which mayhe ofany suitable length according to the purchasedesired upon thespindle or shaltl. y

The several component parts of the apparatus may be readily assembled aswill be obvious from the foregoing, taken in connection with thedrawing, and may also be readily taken apart for the purpose ofcleaning, repair or replacement. The roller flue expander (not shown)may be readily aplied upon the mandrel 2, when the retainmg nut 3 isremoved, in order that the expander may be driven into the flue or tube,with the mandrel 2,, the body and outer end portion of the spindle orpin 1 projecting from the end of the flue. Attention is directed to thefact, that as the spindle or pin 1 is being driven, the s rings 10 willpermit the ratchet wheel an parts carried direction, to avoid riedthereby, inasmuch as the springs 10 tend to absorb the shocks.

The spindle or pin 1 may be forcibly roflue expander when desired byoscillating the handle or lever 25,

which will cause the pawl or dog 17 to' althe ratchet wheel, to turn.

- cotiperable with my own, I have in the presence ternately grip andride idly back over the ratchet wheel, in order that the handle or lever25 will impart anintermittent rotary movement to the spindle or pin 1.When the pawl or dog 17 is-arranged as illustrated in Fig. 2, theoscillation of; the handle or lever will cause the ratchet wheel to berotated in a counter clockwise direction, and if it is desired to rotatethe ratchet wheel and spindle .in a clockwise direction, this may bereadily accomplished by pulling the pawl 17 out of engagement with theratchet wheel through the medium of the\hand piece 20, and then angle of180 degrees an so as to reverse the,

'beveledface 22 and shoulder 23 of the pawl.

It will thus be obvious from the foregoing, taken in connectionwith thedrawing, that the present appliance may and efficiently employed forboth driving and rotating a flue expander, the present appliance beingof advantage in several respec ts, as will be apparentfrom the foregoingwithout further comment.

,Having thus described the invention, what is claimed'as new is z-- 1.In a device of the character described, a spindle, a ratchet wheelfeathered thereon, shock springs mounted upon the spindle and holdingthe ratchet wheel therebetween, a body rotatahly mounted upon theratchet wheel, and a pawl the ratchet wheel.

2. 'In'a device of th'ehch racter described, a spindle having afeather-at one portion, collars mounted upon-the ends of the ,feather, aratchet wheel slidable upon the spindle between the collars and engagingthe feather, springs disposed between the ratchet wheel and collars, abody rotatably mounted upon the ble with the ratchet wheel. 1

In testimony that I claim the foregoing as hereto afiixed my signatureof two witnesses.

WOOTEN L. BAUMANN. 1

Witnesses:v

.l. E. RICHARDSON, H. P. JAYNn.

turning the pawl through be conveniently carried by the body and spindleat the ratchet wheel, and a pawl carried by the body and coiipera-

